A man walked a certain distance. One-third he walked at

A man walked a certain distance. One-third he walked at 5 km per hr. Another one-third he walked at 10 km per hr. and the rest at 15 km per hr. Find his average speed.

Here, the man covers equal distance at different speeds. Using the formula, the Average Speed is given by

=	90	= 8	2	km per hour.
	11		11

8	1	kmph
	11

7	1	kmph
	11

7	2	kmph
	11

8	2	kmph
	11